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  1. APPJ

    I like the sound of tube amp, transformer output, the high sensitivity of In-Ear Monitors makes it difficult to control noise. Plan to make it yourself, hoping to succeed.

    The progress is very slow because searching is lazy. Speak about the power circuit.
  2. APPJ

    I like the sound of tube amp, transformer output, the high sensitivity of In-Ear Monitors makes it difficult to control noise. Plan to make it yourself, hoping to succeed.

    Power supply I plan to use a switching power supply. The schematic will be completed in the next few days. I think switching power supplies have lower noise and lower internal resistance.
  3. APPJ

    I like the sound of tube amp, transformer output, the high sensitivity of In-Ear Monitors makes it difficult to control noise. Plan to make it yourself, hoping to succeed.

    I purchased 6LY8TUBE of different brands from various trading platforms, and one of them is unknown to the brand. Only known about American manufacturing.
  4. APPJ

    I like the sound of tube amp, transformer output, the high sensitivity of In-Ear Monitors makes it difficult to control noise. Plan to make it yourself, hoping to succeed.

    This is an amplification circuit, with a power stage connected by a transistor and multiple outputs from a transformer, suitable for headphones with a range of 8-600 ohms, including in-Ear headphones.
  5. APPJ

    I like the sound of tube amp, transformer output, the high sensitivity of In-Ear Monitors makes it difficult to control noise. Plan to make it yourself, hoping to succeed.

    Use 6LY8 electronic tube.
  6. APPJ

    APPJ Mini2013 Tube amp (6J1 pushing 6P1, 3w per channel)

    You're very professional.Thank you for finding the problem.
  7. APPJ

    Any opinions / reviews on Gemtune APPJ PA1502A

    I spent a whole morning reading this post and I am very happy to have everyone discuss my product. Thank you for your suggestions!
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